Lip-plate for grinders.



M. F. WILLIAMS.. ur um mar mimosas. APPLICATIUN FILED-MAY 10. |9418.

` Patent/m oef. 22,1913@` heavier metal particles,

. mers against the slant wall G wall G, is a slidable plate L mounted ingroovesin the side walls H. This slide plate L has a lip M at its bottomedge, reversely inclined as shown in Fig. 1. The upper edge' of theplate L has a horizontal li N, bent to the right Aas shown and adapte toserve as a handle to lift the plate, as indicated by dotted lines inFig. 1, toany position in the guiding grooves. A -thumb screw Oopposite'one groove in the4 side wall H, fixes the slide L in anydesired adjusted position.

This slide L serves as the bottom of the` supply hopper and is adaptedto deliver the feed material more or less over the center of the shaft.and therefore directly upon the top of the rotating hammers, accordingto its adjustment in its grooves. The eifect of the hammers upon theentering feed is therefore varied. For instance, whenl thel slide-L isadjusted to the position shown by dotted lines thev hammers C will tendto drive the feed material more nearly upward or on a steeper slant tothe horizontal than when the slide is in lthe position shown by full`lines. Any foreign matter that is heavier than the feed, such as piecesof metal, will be driven by the hammers across into contact with theslant wall G, on which they will impinge at a greater or less angle tothe normal and will shoot upward under the slant wall K, up and over it,being deilected by the plate I into the pocket below said plate. Thelighter feed is not so strongly aifected by the hammers as the althoughparticles of the feed itselftcnd to fly out of the hopper when thisd'eflecting lip plate is not used. The space between the vertical wall Fandthe inclined slide L, is subject to the suction-effect ofthe hammerspassing below it, whereby a certain rar'efication of the air are not s oreadily driven upward out of the hopper. l v

While I have describedv and shown the plate K. adaptedto form a pocket.it is evident that this inclined plate K may be omitted or not requiredin certain kinds of material; when omitted the vertical wall willdeflect the material driven by the hamagain and prevent top of thehopper. In some cases this is all that is necessary, while in othersitis desirable to pro'vide a pocket for the collection of foreignmaterial as above mentioned.

I have shown. in Fig. 3 a modified pocket in whichthe slant wall K' andthe vertical .wall J as well as the top plate I', are cast, integrallywith the side wall Inorder to release the foreignv material from thispocket, I have provided a slant bottom P adjusted downwardI them iyingout of the lwardly Fig. 3,-inclined upward from each side wall H, inwhich side wall is an opening Q, -protected by a cover R pivoted at oneedge, as shown in Fig. 3 and-indicated in Fig. 1. This provides for thedischarge of accumulated metal or' gravel in said pocket when! it isformed' as shown in Fig. 3.

Thus the covered holes Q in the sides of the hopper, or the' hingedconnection for the plate, rovide means for clearin the pocket behind theinclined wall K- respectively, when such form is used.

I claim:A

1. The combination with a machine of the character described havingrotary beaters and a' hopper above said beaters provided with a slantingupwardly Baring wall between theside walls andon the far side of thehopper, of a lip plate comprising a wall extending from the top of saidslanting wall inwardly and downwardly within the hopper, and having itslowest edge depending nearly into the path of the entering material thatis-driven upwardly by impact with said hammers, from said slanting wallby an open space,-

-the lip plate thus forming with the sides and slanting wall a coveredhood open in-A side the hopper for deecting thatportion of the feed4that the hammers tend to throw out of the hopper.'

2. In a mach'ne of the character described, the combination with acasing, va set of rotary hammers mounted therein. and a supply hopperlocated above said hammers, of a horizontal lip plate hinged at one edgeto the adjacent wall of saidhopper, and provided at its opposite edgewith a vertical .wall depending between the side walls of the hopper,and having at the bottom'edge of said vertical wall'an upwardly inclinedledge' plate forming a. pocket with an opening within the hopper toreceive the material driven by said hammers thereinto..

3; The combination with a machine of theV character described havingrotary beaters,

and a hopper `above said beaters provided v with a slanting, upwardlyHaring wallbetween sidewalls and on the far side of the hopper, of arlip plate vcomprising a`wall extending inwardly and downwardly withinthe hopper from the top of said slanting wall forming a hood with anopening within the hopper, and then inclined upwardly and toward saidslanting hopper wall forming a pocket in said hood,substantially asdescribed..

4. The combination with a machine of the character described havingrotary beaters, and a hopper Vhaving slanting grooves in the side wallsabove said beaters, and providedv with a 'hood projecting from lthe farside inwardly and downwardly, and thenv uptowar'd said far side forminga covered pocket opening within the hopper, and

` 1,262,156 *l h e, 1

af plate slidingly mounted in said slant" -In testimony whereof Ifhavealxed` my grooves toi form an adjustable 'bottom `forl signature in theresenoe of two witnesses.

Suid hopper and thus vary the upward di- TON'F. WILLIAMS.

e rection of `a. portion of the entering feed `Witnesses; f* A "5 thatis drivenby Sadbeaters into said hood" H. M. Pmis'mb, h

' WM. G.

h and its pocket. v

` r Gopierot this patentmy be ohtained for nve cents each, by addressingthe "Commissioner ofrntekanti,`

h Washington, D. 0."

